6 research outputs found

    Measurement of the WW production cross section in p anti-p collisions at s**(1/2) = 1.96 TeV

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    We present a measurement of the W boson pair-production cross section in p anti-p collisions at a center-of-mass energy of sqrt{s}=1.96 TeV. The data, collected with the Run II DO detector, correspond to an integrated luminosity of 224-252 pb^-1 depending on the final state (ee, emu or mumu). We observe 25 candidates with a background expectation of 8.1+/-0.6(stat)+/-0.6(syst)+/-0.5(lum) events. The probability for an upward fluctuation of the background to produce the observed signal is 2.3x10^-7, equivalent to 5.2 standard deviations.The measurement yields a cross section of 13.8+4.3/-3.8(stat)+1.2/-0.9(syst)+/-0.9(lum) pb, in agreement with predictions from the standard model.Comment: submitted to PR

    Erratum to Measurement of σ(ppˉZ)Br(Zττ)\sigma (p \bar p \to Z) \cdot Br(Z \to \tau\tau) at s=\bm{\sqrt{s}=}1.96 TeV, published in Phys. Rev. D {71}, 072004 (2005)

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    A change in estimated integrated luminosity (from 226 pb1to257pb^{-1} to 257 pb^{-1}leadstoacorrectedvaluefor leads to a corrected value for {\sigma (p \bar p \to Z) \cdot}BrBr{(Z \to \tau \tau)}of of 209\pm13(stat.)\pm16(syst.)\pm13(lum) pb
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